Furnace.



No. 807,105. PATENTED DEC. 12, 1905. R. A. BAILEY.

FURNACE.

APPLICATION FILED JUNE 8.1905.

UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented. Dec. 12, 1905.

Application filed June 8, 1905. Serial No. 264,313.

To all whom it may concern.-

Be it known that I, REGINALD A. BAILEY,-

a citizen of the United States of America, residing at Newcastle, in the county of Lawrence and State of Pennsylvania, have invented certain new and useful Improvements in Furnaces, of which the following is a specification,reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in furnaces; and the primary object of the present invention is the provision of novel means in connection with the above type of furnaces for easily and quickly cleansing the bottom or platform of the furnace of ingredients detrimental to the heating of sheets of tin, bars of iron, or the like metals.

Another object of this invention is to provide a furnace which will be compact in form, strong and durable, comparatively inexpensive to build, and highly efficient for heating sheet and bar metal.

With the above and other objects in view the invention finally consists in the novel construction, combination, and arrangement of parts which will be hereinafter more fully described and then specifically pointed out in the claims, and, referring to the drawings accompanying this application, like numerals of reference designate corresponding parts throughout the several views, in which- Figure 1 is a transverse sectional view of my improved furnace. Fig. 2 is a longitudinal sectional view taken on the line m w of Fig. 1 looking in the direction of the arrow in said figure, and Fig. 3 is a similar view taken on the line y 3 of Fig. 1 looking in the direction of the arrow in said figure.

To put my invention into practice, I construct my improved furnace of two compartments, each of which may be operated independently and may serve functionally as a furnace; but I preferably construct these independent compartments as one furnace in order that a compact construction may be maintained and said compartments conveniently operated.

The furnace in its entirety comprises three walls 1, 2, and 3, the walls 1 and 3 forming the longitudinal exterior sides of the furnace, while the wall 2 serves as a partition forming compartments 4: and 5, which I will hereinafter term sheet and bar furnaces, respectively. By referring to the drawings it will be observed that the compartments 4: and

5 or the sheet and bar furnaces are practically identical in construction; yet differences do exist, which will hereinafter be more fully described; but in describing the general construction of the furnacesI only deem it neces' sary to set forth the construction of one furnacenamely, the sheet-furnace or compartment 4. This compartment is provided with a suitable arched roof 6 and with a front wall 7 and a rear wall 8. Within the compartment 4 I construct a bridge-wall 9, said wall being constructed upon the ground on which the furnace is erected and extending to within a short distance of the top of the same, dividing the furnace into two sections of unequal length.- The section to the left-hand side of the bridge-wall in Fig. 1 of the drawings contains a grate 10, upon which fuel is placed, access being had to said grate through an opening 11 in the side wall 1 of the furnace. Beneath the grate 10 is formed an ashpit 12, and in the rear wall 8 of the furnace an opening 14 is provided for the removal of ashes from the ash-pit. Upon the other side of the bridge-Wall 9 I construct a horizontal platform 15, upon which the sheets or bars of metal to be heated are placed, and access is had to the space above this platform through an opening 16 in the front wall 7 of the furnace that is closed by a suitable door 17. Beneath the platform 15 I arrange a grating 18, upon which fuel may be placed to furnish additional heat to the heating-compartments of the furnace above the platform 15, also to facilitate the passage of the heat from-the opposite side of the bridge-wall into said heating-compartment. Access may be had to the grate 18 and to the space below the same through an opening 19, that is closed by a door 20.

My improved furnace in its entirety is preferably constructed of infusible material, such as brick, and in the construction of the bridgewall 9 I employ checker-Work. The checkerwork consists in providing a transverse passage 21 in the bridge-wall 9, this passage being formed directly above the platform 15. The passage communicates with the heatingcompartment above said platform by a plurality of openings 22, and through said open ings steam or air is adapted to be ejected, as Will be presently described, for cleansing the platform 15.

may employ pipes covered with asbestos or suitable tile having openings formed therein.

The construction of the compartment 5 of the bar-furnace is identical with that just de- In lieu of the checker-work I IIO scribed, with the exception that the bridgewall 9 is provided with asupplementary passage 21, which is located directly above the passage 21. The passage 21' communicates with the heating-compartment above the platform 15 by a plurality of openings 22', and through said openings is adapted to be ejected steam or air adapted to cleanse the platform of dust or dirt that may accumulate from the fuel used as a heating medium.

In order that steam or air may be conveniently fed to the sheet and bar furnaces, I employ a steam-supply pipe 23, which extends transversely over the top of the furnace and is provided with depending pipes 24 and 25, the lower ends of said pipes being provided with suitable drain-cocks 26 26, which are normally closed. The pipe 24 is provided with an outwardly-extending pipe 27, which protrudes through thewall 1 of the furnace into the transverse passage-way 21 of the bridgewall 9. This pipe is provided with asuitable valve 28'to control the passage of steam or air into the bridge-wall. The pipe 25 is provided with inwardly-extending pipes 29 and 30, which protrude through the wall 3 of the bar-furnace and communicate with the transverse passage-ways 21 and 21. The pipes 29 and 30 are provided with suitable valves 31 31 to control the passage of steam or air into the bridge-wall 9.

In the present illustration I have illustrated pipes adapted to be used in connection with steam, and in order that air may be used conveniently in lieu of steam I have provided the pipes 24 and 25 with Ts 32 32, which are closed by plugs 33 33. When it is desired to use air, a suitable air-supply pipe may be connected to the Ts 32 32 by removing the plugs 33 33. The pipes 24 and 25 are provided with valves 34 34, which are employed for shutting off the supply of steam when air is to be used in connection with the furnaces.

It will be observed that in connection with the sheet-furnaces or compartment 4 I have dispensed with the use of air or steam for increasing the heating facilities of the furnace and merely utilize the steam or air which is introduced into this compartment in the manner hereinbefore described to soften and loosen the matter which may accumulate upon the surface of the platform therein, such matter being readily removed after it has been loosened and softened by the steam through the opening 16, it having been found by practice that the heat derived from the fuel above the grating 10 is sufiicient in all instances to heat sheets or plates of metal; but where bars of metal, such as steel or iron, are to be heated I have found it necessary to employ extra means for facilitating the heating of said bars, such means being the air-supply to this compartment, and this compartment being also provided with the steam-supply for the purpose of cleaning the same in the manner above described. For this reason I have constructed two separate compartments, which can be conveniently operated together or independently.

It is thought from the foregoing that the construction, operation, and advantages of the herein described furnace will be apparent without further description, and it will be understood that various changes in the form, proportion, and minor details of construction maybe resorted to without sacrificing any of the advantages thereof.

What I claim, and desire to secure by Letters Patent, is

1. A furnace of the type described consisting of two compartments, a bridge-wall constructed transversely of each of said compartments, a grate mounted in each of said compartments upon each side of said bridge-wall, a platform constructed uponone side of said Wall in each compartment, said compartments having doorways formed therein whereby access may behad to said grates and said platforms, said bridge-walls having a plurality of openings formed therein above said platforms, pipes connecting with said openings and adapted to connect with a suitable steam-supply, and valves carried by said pipes, substantially as described.

2. In a furnace of the type described, consisting of two compartments, each compartment being provided with a bridge-wall, one of said bridge-walls being formed with a row of openings and the other of said bridge-walls being provided with a plurality of rows of openings, pipes connecting with the openings in both bridge-walls and adapted to supply steam or air thereto, a platform in each compartment disposed below the level of the openings in said bridge-walls, a grate in each compartment on each side of the bridge-wall therein, one grate in each compartment being below the said platform.

In testimony whereof I affix my signature in the presence of two witnesses.

REGINALD A. BAILEY.

Witnesses: DANIEL THOMAS, EDWIN WVILLIAMs. 

